Pulling device for rolling-mills.



'W. C. CORYELL.

PULLING DEVICE FOR ROLLING MILLS.

APPLICATION FILED SEPT-29. 191s.

1,238,002w Patented Aug. 21,1917.

PU'LLING DEVICE FOR ROLLING-MILLS.

I Specification of Letters Patent.

.Patented Aug. 2f, 191W.

, Application filed September 29, 1916. Serial No. 122,798.

To all whom it may concern:

Be it known that I, WILLIAM C. CoRYnLL, a citizen of the United States,residing at Youngstown, county of Mahoning, State of Ohio, have inventedcertain new and useful Improvements in Pulling Devices for R011-ing-Mills, of which the following is a specification.

The present invention relates to pulling devices or mechanisms fordrawing out the material worked upon by rolling mills. of the objectsof't'he invention is to provide a device in which the work-engagingmember may be laterally adjusted to maintain it in proper alinement withthe workand the portion of the rolls of the mill through which it ispassing. Another object of the invention is to so construct the devicethat the'pull exerted by it may be gradually reduced as the material isdrawn out and its cross-section diminished.- Another object of theinvention is to provide a device which shall be simple and efficient inconstruction and operation.

With these general objects in view, the

particular character of the invention will be best understood uponconsidering the following detailed description taken in connection withthe accompanying drawing, and the scope of the invention will be pointedout in the'appended claims.

In the drawing, Figure 1 is a general view illustrating a pulling deviceconstructed in accordance with the present invention and constitutingthe preferred form; Fig. 2 is a plan view of the carriage and a portionof the track upon which it runs; Fig. is a plan view of one of. theweight-retaining rings of the guideway through which the weights pass;Fig. 4 is a plan view of a modified form of arm and material-engaging,wheel for use upon the carriage; Fig. 5 is a side elevation of thesame; Fig. 6 is a plan view of a modified work-engaging member upon thesame arm; Fig. 7 is a side elevation of the same; Fig. 8 is a sectionalview of a modified weight guide; Fig. 9 is a perspective view of aportion of the same; Fig. 10

is an elevation illustrating a simple applica-' tion of weights to thedrawing cord; Fig. 11 is a plan view of one of the we ghts and Fig. 12illustrates a further modification in which a weight travels down aninclined surface to vary the pull upon the cord.

One 7 Throughout these views like characters refer to like parts.

Referring to the drawing in detail, and more particularly to thepreferred form of the invention, 20, 21 and 22 designate-three rolls ofa rolling mill of the type illustrated in my prior application SerialNo. 46654,

' filed August 21st, 1915, Patent No. 1,221,029,

granted April 3, 1917 In this particular instance the mill is intendedfor rolling endless articles and 23 designates an endless belt which hasbeen rolled out to practically its full length. In practice the blank,which is in the form of a ring, is slipped over the roll 21 and as therolls are operated it enlarges into a loop which finally becomes of suchlength that it may be slipped over the work-engaging member 24, which isprefer ably in the form of a flanged wheel. In the preferred form, thiswheel or pulley 24 is mounted upon a trolley frame 25 which is adaptedto be drawn forward from the rolls as the loop lengthens. The pulley 24isremovably journaled between the bifurcated arms of the bearing member26 and the latter is threaded upon a'transverse screw 27. As clearlyshown in Fig. 1, the free ends of the arms of the bearing member 26 areturned upwardso as to form hooks or recesses which constitute bearingsfor the axle of the pulley 24. By reason of this construction the pulleymay be readily put in place after havin loop of the material beingworked upon by the mill. The adjusting screw 27 is journaled at its endsin upward extensions of the frame 25 and is free to be rotatedby thehand-wheel -28 so as to shift the bearing member 26 to the'right or left:to keep the wheel 24 in proper alinement with the working portions ofthe reducing rolls. A collar or nut 29 is threaded on the screw 27 andsaid nut and the hub of the hand-wheel 28 are positioned on oppositesides of a portion been threaded into the of the frame 25 and thusserve, when the nut clearly illustratedi A rope or cord 33 is secured atone end to the bearing member 26 by being passed through an opening insald member, and extends forward to the pulling mechanism. By thismechanism the carriage is pulled forward so as to maintain the loop 23under the proper tension as it is being worked upon by the rolls of themill.

. In the present instance the cord or rope 33 passes over a pulley 34and is provided at its lower end with a series of weights 35, 36,

1, the weights 35, 36, 37 and 38'are in contact with each other and allexert their pull upon the cord 33; This starting position of the weightsis indicated in dotted lines in Fig. 1. As the material is drawn out bythe carriage, these weights travel downward. Since the cross-sectionalarea of the material decreases as it lengthens, it is desirable togradually reduce the pull upon the cord 33 by successively removing theweights, or certain of them, from exerting any pull upon the cord 33.For this purpose rings 39, 40 and 41 are secured at spaced intervals toan upright 42. The ring 39 is of such size that it will engage weight 35but pass weights 36, 37 and 38 through it. Similarly ring 40 will engageweight 36 but pass weights 37 and 38. And, finally, ring 41 will engageweight 37 and pass weight 38. In this way as. the Weights traveldownward the upper ones are successively engaged and their pullingeffect re moved from the cord 33. In the present in stance the rings 40and 41 are of the same size as ring 39 but are provided with lugs whichproject inward far enough to perform the functions indicated. The lugs43 upon ring 40 extend far enough inward to engage weight 36 but not farenough to prevent weight 37 from passing. Similarly lugs 44 on ring 41extend far enough inward to engage weight 37 but not far enough toprevent weight 38 from passing. In order that the weights 36 and 37 maybe properly centered upon the rings 40 and 41, respectively,

the former is provided with guiding projec-- tions 45 and the latterwith similar pro ections 46. These guiding projections have inclinedfaces on their inner sides so as to-cause the associated weights tocenter themselves upon the rings and thus insure a proper alinement,which is necessary in order that the weights may be removed in themanner explained. Upon the return movement of the cord the weights areremoved from their rings in the reverse order. as will be apparentwithout further explanation.

Instead of automatically removing the various weights in the mannerindicated in Fig. 1, they may be simply supported upon designer.

In the carriage structure the pulley 24 and the associated bearingmember 26 may be replaced by a pulley 51 and an arm 52. In this instancethe pulley or wheel 51 constitutes the loop engaging member and ismounted upon a pin or shaft projecting laterally from the arm 52, andthe latter is adjustably mounted upon the screw 27 of the carriage. Thisadjustment is brought about by giving the arm 52 threaded engagementwith the screw 27 in a manner similar to that provided in the case ofthe member 26. Instead of employing a pulley or wheel 51, the arm 52 maybe provided with a rigid loopengaging member 53, as clearly illustratedin Figs. 6 and 7. The member 53 is rigidly secured to the outer end ofthe arm 52 by any suitable means, such as pins 54 extending through aplate or yoke 55 into the arm 52. In operation the loop 23 slides overthe surface of the member 53, which is also preferably'provided withflanges like the wheels 24 and 51'.

In lieu of the weight-guiding structure of Fig. 1, I may employ themodified structure illustrated in Figs. 8 and 9. In this instance theuprights 56 and 57 which are preferably channel irons, constitute theguide-ways for the weights 58 to 64, inclusive, which are shaped so asto fit into the space between the flanges of these mem-- bers In thestack of weights 58 to 64, inelusive, I provide at intervals plates 65,66 and 67 which are arranged to engage stops carried by the pairs ofcross-bars 68, 69 and 70, respectively. In the case of the plate 66,which is clearly illustrated in Fig. 9, I provide three lips orextensions 71, two extending from one side and one from the other. Theseare *ada pted to engage stops 72 mounted .upon the bars 69. The plate 65is provided with similar projections 73 which coiiperate with stops 74secured to the side bars 68. The plate "67 is provided with similarprojections and the side bars 70 with similar stops. As clearlyillustrated, these pro ections and stops interfere only in a definiteorder. Thus as the weights are lowered they all pass the stops 74located upon the side bars 68 until the plate 65 reaches said stops.When this occurs, the projections 73 engage the stops 74 and the furtherdescent of the weights 58 and 59 is prevented. The downward movement ofthe remaining weights continues until the plate 66 reaches stops 72 uponthe side bars 69, whereupon it and the weights 60 and 61 are arrestedand their further downward movement prevented. Similarly plate 67engages the stops on the side bars and the down ward movement of weights62 and 63 is arrested. This leaves only the weight 64 and its supportingplate to continue their downward movement. Upon the returning movementof the weights they are taken up in the reverse order until all arebrought together into the position shown in dotted lines in Fig. 8. Thisis the position corresponding to the dotted line position of thecarriage of Fig. 1. As clearly seen, the various weights employed inthis modification are slotted so that they may be removed from thestructure when raised above the top of the channeled members 56 and 57.Likewise the opening around the cord 33 is such as to allow the freepassage of the cord through those weights which are retained atdifferent points during their downward passage. Obviously-the lips orprojections upon the various catch plates and the stops upon the variouscross-bars may be varied in position and it is only necessary that theybe arranged so as to engage in the manner just explained. In this formof the invention I have also indicated the stopping of a plurality ofweights in each of the several positions, thus weights 58 and 59 in oneposition, 60 and 61 in another, and 62 and 63 in a third. Obviously anydesired number of weights may be employed, according to the character ofthe pull which it isdesired to exert upon the carriage of the device. 1

A still further modification of the invention is illustrated in Fig. 12,where the cord 33 after passing over pulley 34 is secured to a weight 76which is adapted to pass downward over the curved surface 77 as thecarriage moves forward from the rolls of the mill. It will be seen thatas the weight 76 travels downward over the curved surface 77, thevertical component of the force exerted by the weight will be varied andconsequently the pull exerted upon the cord or rope 33 will be varied.In the particular instance shown, the pull willbe gradually reduced asthe weight is lowered and the greater reduction will take place towardthe end of the downward movement. Obviously the shape of the surface 77may be varied to suit the requirements of any given case.

It will be noted that the track wheels 30 and rails 32 of the particularstructure herein disclosed, c nstitute convenient guiding means for the'frame and associated parts and obviously may be replaced by otherguides and guiding surfaces. Likewise the lateral adjustment of thework-engaging &

member may be brought about in other ways than by the adjusting screw27. Other modifications will also suggest themselves to persons skilledin this art and need not be particularly pointed out.

It is pointed out that some of the matter disclosed herein is alsodisclosed in my aforesaid prior application Serial No. 46654, filedAugust 21st, 1915, Patent No. 1,221,029, granted April 3, 1917, and inmy prior ap plication Serial No. 59582, filed November 4th, 1915, PatentNo. 1,233,647, granted July 17, 1917, and that therefore the presentapplication is in part a continuation of said applications.

that I claim as new and desire to secure by Letters Patent of the UnitedStates is:

1. A pulling device for drawing out the material worked upon by rollingmills, including a frame, wheels on said frame adapted to travel on atrack, an adjusting screw journaled near its ends in portions of saidframe, a bearing member mounted for travel on said screw, and means atthe free end of said bearing member for engaging said material to drawit out as said frame is moved.

2. A pulling device for drawing out the material worked upon by rollingmills, including a frame, wheels on said frame adapted to travel on atrack, an adjusting screw journaled near its ends in portions of saidframe, a bearing member mounted for travel on said screw and havingbifurcated arms extending in the direction of travel of said frame, anda material engaging member removably mounted in recesses formed in theouter ends of said arms.

3. A pulling device for drawing out the material worked upon by rollingmills, including a frame, wheels on said frame adapted to travel on atrack, an adjusting screw journaled near its ends in portions of saidframe, a bearing member mounted for travel on said screw and havingbifurcated arms extending in the direction of travel of said frame andterminating in upturned ends, an axle journaled in said recesses, amaterial engaging wheel on said axle, and means for rotating and settingsaid screw to adjust said wheel relative to said frame.

4. A pulling device for drawing out the material worked upon by rollingmills, including means for engaging the material and means for drawingout said engaging means with a pull which decreases as the crosssectional area of the material decreases.

5. Pulling mechanism for drawing out the material worked upon by rollingmills, including a frame, wheels on said frame, a track on which saidwheels travel, a bearing member carried by said frame, means at one endof said member for engaging said material to draw it out as sald frameis moved,

' and means for adjusting said engaging means laterally of said track.

6. Pulling mechanism for drawing out the material worked upon by rollingmills, in-

cluding means for engaging the material, and.

means for drawing out said material as it is worked upon by the millcomprising'a plurality of weights arranged to be removed one by one asthe material lengthens.

7. Pulling mechanism for drawing out the material worked upon by rollingmills, including means for engaging the material, means for drawing outsaid material as it is worked upon -by-the mill comprising a pluralityof weights, and means for automatically removing said weights one by oneas the material lengthens.

8. Pulling mechanism for drawing out the material worked upon by rollingmills, including means for engaging the material, means for drawing outsaid material as it is worked upon by the mill comprising a plurality ofweights, projections lying in the paths of travel of the difi'erentweights and operative. to successively engage and hold the weights outof pulling position as they travel downward in response to thelengthening of the material.

9. Pulling mechanism for drawing out the material Worked upon by rollingmills, including means for engaging the material,

means for drawing out said material as it is worked upon by the millcomprising a mass acted upon by gravity, and means for graduallyreducing the pull exerted by said 85 mass as the latter moves downwardduring the lengthening of thevmaterial.

10. A pulling device for drawing out the material worked upon by rollingmills, including a frame, means for guiding said frame in a to-and-fromovement, a bearing member secured to said frame, means foi" of travelof said frame, and a materialengaging member removably mounted inrecesses formed in the outer ends of said arms.

12. Pulling mechanism for drawing out the material worked upon byrolling mills, including a frame, guiding surfaces on said frame, guideson which said surfaces travel, a bearing member carried by said frame,means at one end of said member for engaging said material to draw itout as said frame is moved, and means for adjusting said engaging meanslaterally of said guides.

In testimony whereof I have hereunto subscribed my name this 27th day ofSeptember, A. D. 1916.

WILLIAM C. CORYELL.

